Gas burner



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JSEPH `WML SlEtlP, 03F PHLAlDlELlPHlA, PENNSYLV.

eas sunnita.

Application filed April l1, 192i. Aerial lilo. AGLZL To all 07mm t may concern:

Be it known that l, JOSEPH W. SHARP, a citizen of the United States, residing at Philadelphia in the county of Philadelphia and State o` Pennsylvania, have invented certain new and useful lmprovements in` Gas Burners, of which the following is a specification.

` rlhis invention relates to stoves and iur naces, and the primary object of the invention is to provide an improved means for converting an ordinary coal burning stove orfurnace into a gas burning stove or furfnace, so as to eliminate the inconveniences generally experienced with the caretaking of coal burning stoves and furnaces.

Another object of the invention is to pro-` vide a novel burner for use in ordinary coal burning stoves, and a novel means for protectlng the burner, said means being formed of fire brick or other refractory material, soV

as to form means for eectively radiating heat from said burner. v

A further object of the invention is to to provide an improved gas burner of the above character, which will be durable and entlcient in use, one that will be simple and Eli easy to manufacture, and one which can be placed upon the market and incorporated with any stove at a reasonable cost.

With these and other objects in view, the invention consists in the novel construction, arrangement and formation of parts, as will be hereinafter more specically described,

\ claimed and illustrated in the accompanying drawings, forming a part of this specification, in which:

lFigurel is a fragmentary vertical section through an ordinary coal burning furnace showingthe` novel type of burner arranged therein, the novel grate and protector therefo`r,'and the bed of heat radiating material.

Figure 2 is a fragmentary horizontal section through afurnace `showing the improved `burner and grate incorporated therewith. i i

`Figure 3 `is a fragmentary transverse section through a coal burning cook stove, showing the novel type of burner andgrate incorporated therewith.

lligure 4 is a fragmentary longitudinal section through a cook stove, showing a novel type of burner and grate incorporated therewith.

Referring to the drawings in detail,

wherein similar reference characters designate corresponding parts throughout the several views, the letter A indicates a furnace; l, a novel type of gas burner for use therewith; C the grate or protector for the burner and `D the bed of heat radiating Inaterial supported by the grate.

rl`he furnace A may be of the usual or any preferred type, and has merely been shown for illustrating the use of the invention, and it is to be understood that the attachment is adapted to be usedwith any type of coal burning stove or furnace, for converting the same into a gas burning stove or furnace. As shown the furnace A includes the usual casing or wall provided with the usual nre door (not shown), and ash door 6. yll`he inner surface of the wall 5 may be provided with an annular iiange 7 for supportingthe novel type o f grate C which will be hereinafter more fully described. 'llhe ash door 6 maybe provided with the usual draft slide 8, for controlling the draft in the furnace.`

rlFhe-burner B is preferably formed in two sections, an upper section 9 anda lower section or base 10. The lower section 10 as shown, includes a relatively large tubular body 11, which has its lower end open and flared outwardly as at 12. The lower flared end 12 of the tubular body 11 will have leadingdirectly into the center thereof, the gas feed pipe 13, which may lead to any suitable source of supply. This pipe can have arranged therein an ordinaryor any preferred type of gas valve 14" for controlling the flow of gas to said burner.

The upper section 9 includes a concaveconveX shaped plate 14, an annular depending side wall 15, a bottom wall 16, and a collar 17. The collar 17 receives the upper end of the tubular-body 11, and may be detachably connected thereto by a suitable pin and bayonet slot connection. The upper wall 14 and the annular side wall 15 is provided with a plurality of outstanding burner nipples`18, 1

which are adapted to extend at all angles from the said Walls, so as to direct the flame from the burner in all directions.

The Xbody or ,burner 9 rests upon .or supports a ring 20, on which the grate bars 2l are adapted to rest. I t is preferred that these grate bars'be formed of refractory material, and the same are gradually tapered toward their inner ends so as to form a substantially circular disc flange. -A s shown, the outer ends of the grate bars rest upon the flange 7` andthe inner ends thereof rest upon the ring yor annular body V2O. These grate bars 2l terminate short of the burner B, and the burner is provided with a spaced protecting dome 22, which is also preferably formed offfire brick or other refractory Inaterial. As shown, the dome is formed of sectionsyso as to kfacilitate the placing thereof in 'the furnace, and the lower edge of the outermost seetionsrest upon the upper surface of the fire bricks 21 at the inner edge thereof. The protecting dome v22 in reality forms a portion ofthe grate C, and the bars Qiandthe :dome 22 supports the bed of refractory material D.

This bed ofrefractory `material D .may be formed of brokendire brick or the` like, and will be heaped Aupo-n the grate bars `21 and the dome`-22 tofthe desired height. It can be seen that the `burner B will heat the lire brick, which Awill in'turn heat the bed of refractory material D, which'will effectively radiate Vthe 'heat. It valso can vbe seen that the bed of refractory material D 'will become red hot and glow similar toan ordinary coal fire. In order to support combustion'the air will be mixed with the gas lin the tubular body 10 ,and the gas will flow in through the lowered 1 flared -end ithereof. The amount of air ytaken into the lower yflared end of the tubular "body can be controlled in any preferred manner, and if so desired the draft slider8 of the ash doorGcan' be utilized for this purpose.

While the'burner shown in Figures land Q has been especially adapted for furnaces, particularly ofthe hot airtype, the burner can'be readily usedffor cookstoves, .and in Figures 3 and 4 is shown a particular type of burner grate, which isadapted to be used with cook-stoves.

In these figures, the cook stove ymay be of the usual -or any `preferredconstruction as indie-ated by thefletter'l and'has arranged therein al novel burner F, the grate vGr and thebedof vrefractory material'H. Ihe stove, as stated, is ofthe ordinary'or anypreferred construction and `includes the side -wa'lls 25, and 4front and .rear -walls'26 and 27. `The front wall'26'rnay be provided with theusual fire door(not shown and-theashpit door 28 which lcan be provided'with the `usual draft slide 129.

rPhe burner F in' this construction is preferably of elongated form, so as to extend under all of the cook holes in the stove, and this burner includes a longitudinally extending body 30 having the dome 31 formed at the forward end thereof. The dome 3l is provided with a lower flared end 32, which terminates adjacent to the ash pit door 28. The ends of the longitudinal body 30 may be provided with lugs or strength ribs S3 or 34.- and it can be seen that the lug or strength rib 34 extends beyond the dome The lugs 33 and 34 may be detachably fitted in the usual sockets 35, formed on the stove for supporting the ordinary grate. The longitudinally extending ,body 30 is provided with rows of outwardly extending burner nipples 3,6, and it can be seen that the burner throughout its entire length with the excel tion of the dome 31 is provided with the burner openings or nipples.

The grate C includes the transversely extending grate bars 37, which are preferably formed of fire brick, and as shown these grate bars are relatively narrow and elongated in form and extend inwardly fromthe side walls25 vof the stove toward the burner F and the inner ends of these gratebars rest upon the longitudinally extending supporting `bars 38 which may have their terminals anchored respectively in the front and rear walls 26 and 27vof the stove. The outer ends of the grate bars STrestvupon suitable longitudinally extending flanges or ribs 39 formed on the walls 25 of the stove. A suitable longitudinally extending dome 40 is also provided 'in this form -for protecting the burner F and includes the longitudinally extending fire bricks 4l, and asshown these fire bricks have their side edge preferably tapered, so that'the dome may be curved transversely, as clearly shown in Figure 3 of the drawings. It can be seen that the free yedges ofthe lower lire bricks 41 rest upon the grate bars 37 of the grate.

Theibed ofrefra etory material yH is placed upon the dome .40 and the grate (l in the same manner as is shown in Figures l and Q and this bed of refractory material is adapt ed to become -hot and radiate heat throughout the entire upper surface of the stove. 'l-he lower flared portion of the dome 31 is ofcourse open, and has extending thereinto the v.fuel feed pipe 43, which may be provided with a suitablefgas cock 44. It can be seen that the gas and air will be intermixed in the dome 3l. The flow of air in this form may also be controlled in any manner, but it is preferred that the slide door29 be used in the ash pit 28.

From the foregoing description, it can be seen that :1n-exceptionally simple burnerand grate has been provided for permittingan ordinary coal burning stove-or furnace to be easily and readily converted into a gas stove or furnace. This effectively solves the problll retener formed of refractory material, and a dome formed of refractory material supported by said grate and arranged over and in spaced relation to said head.

2. The combination of a burner compris ing a head having a plurality of burner openings formed therein, a sectional grate formed of fire brick surrounding the head, a dome supported by the grate formed of sections of refractory material arranged above `and in spaced relation to said head, and a bed of refractory material arranged upon said grate and said dome. y 3. The combination with a burner comprising a' head having a plurality of outlet burner openings therein, an enlarged tubular body communicating with the head having a lower open flared end, a gas supply pipe` extended into said flared end, means controlling the flow of gas through said pipe, a plurality of grate bars of refractory material arranged outwardly of the head, and a dome formedV ofsections of refractory material arranged upon and supported by the grate bars and arranged over the head and in spaced relation thereto.

4l. A gas burner for use in connection with coal burning stoves and furnaces comprising a burner head having a plurality of burner openings formed therein, a tubular body communicating with the head having an open flared end, a gas supply pipe leading into said flared end,` a sectional grate arranged around the burner head, and a sectional dome carried by the grate and are ranged over and in spaced relation to the `burner head, the dome and grate being formed of refractory material, and fragments of refractory material supported by said dome and grate arranged to be heated from the flame from said burner head.

5. rlhe combination with an ordinary coal burning stove or furnace, of a gas burner therefor including a head arranged centrally within the stove, a grate of refractory material supported by said stove and arranged about the head, a dome of refractory material surrounding said head and arranged over and in spaced relation to said head carried by the grate, said dome being formed of refractory material, and a bed formed of fragments of refractory material supported by said grate and sai-d dome.

6. The combination with a coal burning stove including an ash pit door having a draft slide therein, of a gas burner for the coal burning stove including a burner head having a plurality of outlet burner openings therein, and a tubular body having a lower flared open end arranged adjacent to the ash pit door, a refractory grate and dome arranged around and over said burner head, a gas supply fuel pipe extending into the stove and into the lower flared end of the tubular body, a out off valve arranged in said pipe, the draft slide forming means for regulating the amount of air taken into the flared end of said body.

7. The combination with an ordinary coal burning stove including a casing, and a supporting flange carried by the side Walls of the casing, of a gas burner therefor including a head arranged centrally within the casing, a supporting flange carried by the head, the head having a plurality of burner outlet openings formed therein, a grate of refractory material including a plurality of plates disposed in abutting relation and resting upon the supporting flanges carried by the head and by said casing and terminating at said head, and a dome formed of refractory material disposed over said head and resting upon the inner terminals of said grate.

JOSEPH SHARP. 

